13
OPERATION
Maintenance:
Any maintenance on the
Nozzle and Silencer must only be conducted
by trained and qualified personnel.
Ensure the system pressure is isolated
before undertaking maintenance on the
nozzle or silencer.
WARNING
ABRASIVE FLOW RATE AT 100 PSI
Abrasive Type: GMA Garnet Premium Blast
Nozzle Throat Size
Kgs/Hr (Lbs/Hr) Abrasive valve turns
6 (3/8”)
180-250 (400-550)
4-5
7 (7/16”)
250-320 (550-700)
4
8 (1/2”)
300-380 (660-840)
3.5-4
2. The optimum nozzle standoff distance
will depend on the type of coating to be
removed and is influenced by factors such
as coating type and thickness, abrasive
type being used, worksite access and
required surface profile.
3. When safe to do so, start blasting at a
stand-off distance of 500-600mm (20-24 in).
Adjust the standoff distance to find the
optimum stand off for the job at hand.
Abrasive Flow Rate
Optimum abrasive flow rate varies depending
on nozzle size, air flow and abrasive type. The
table below sets out the recommended typical
abrasive flow rate range when using Australian
GMA Garnet.
